The Lawful evil undead Lich that rules Thay, the city of the Undead.

Szass Tam is a powerful lich and a member of a group of eight Zulkirs who rule the country of Thay. He is the Zulkir of Necromancy and commands the Legion of Bone, a huge legion of undead soldiers, led by his vampire and lich generals. Szass Tam is the ruler of Thaymount.